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NumPydata~5 mins

Integer types (int8, int16, int32, int64) in NumPy - Cheat Sheet & Quick Revision

Choose your learning style9 modes available
Recall & Review
beginner
What does int8 represent in numpy?

int8 is an integer type that uses 8 bits to store values. It can hold numbers from -128 to 127.

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beginner
How many bytes does int16 use and what is its value range?

int16 uses 2 bytes (16 bits) and can store integers from -32,768 to 32,767.

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intermediate
Why choose int32 over int8 in numpy arrays?

int32 can store much larger numbers (from about -2 billion to 2 billion) than int8. Use it when you need bigger integer values.

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intermediate
What is the difference between int64 and int32?

int64 uses 8 bytes and can store much larger integers (from about -9 quintillion to 9 quintillion) compared to int32 which uses 4 bytes.

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intermediate
How does choosing the right integer type affect memory usage in numpy?

Choosing smaller integer types like int8 saves memory but limits the range of values. Larger types like int64 use more memory but can store bigger numbers.

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Which numpy integer type uses 1 byte of memory?
Aint64
Bint16
Cint8
Dint32
What is the maximum value that int16 can store?
A32,767
B127
C2,147,483,647
D9,223,372,036,854,775,807
If you need to store very large integers, which numpy type should you use?
Aint8
Bint64
Cint32
Dint16
Which integer type uses 4 bytes of memory?
Aint32
Bint16
Cint8
Dint64
What happens if you store a number larger than the max value of an integer type in numpy?
AIt converts to float automatically
BIt raises an error
CIt stores the number correctly
DIt wraps around or causes overflow
Explain the differences between numpy integer types int8, int16, int32, and int64 in terms of memory size and value range.
Think about how many bits each type uses and how that affects the numbers they can store.
You got /3 concepts.
    Describe why choosing the correct integer type is important when working with numpy arrays.
    Consider what happens if the type is too small or unnecessarily large.
    You got /3 concepts.